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The Java WebStart technology is one of the fastest ways of installing and launching Java based applications. This one-click wonder is available for anyone who has a web browser and an Internet connection.

The utilities that use this system can receive updates automatically and all one has to do is deploy a Java Network Launching Protocol (JNLP) file in order to have the app installed onto the computer. These files can also be subjected to modifications, provided that an appropriate tool is at hand.

One such program is JNLP File Editor and it offers a quite straightforward approach to handling the code and information stored inside such a package. Through a simple and well organized interface you will have quick access to all the features for adding or removing data inside a JNLP file.

As soon as you load one such item inside this app, you will be able to browse and view the content from the Java package. The first data fields you will see are the specification, version, codebase location and the href attribute.

The information from the JNLP file can contain several entries and besides the title, vendor and homepage, a lot of data is stored in this area. Editing and adding new data is a pretty easy job since for the first action you can simply type in the desired details in the existing fields.

When it comes to adding elements, you will have to pay attention to the section you are currently browsing because the commands from the 'Add' menu depend a lot on the category that is currently highlighted.

With dedicated areas for adding and modifying the XML code as well as the deployment related info, JNLP File Editor is a rather complete tool and will surely prove to be a useful asset for all those interested in working with Java WebStart.